I have a native C++ dll doing some advanced calculations which should be kept secret. The dll has an interface, let's say:
int calculate(int* params, int params_length);
I want to expose this dll to web applications. So far I found that common solution is to build a web service around the dll (SOAP or REST).
What is the best way of solving this kind of a problem, what platform to use (EC2 or Azure) ? I would prefer to not use .NET solution.
Having a service around it will be best solution. REST service if preferable as performs better and we don't need to build SOAP wrapper anymore.
Also, if the web applications are written in .NET you can directly use C++ DLL, as explained here, http://blogs.msdn.com/b/jonathanswift/archive/2006/10/02/780637.aspx
Regarding platform, there is no best platform as such and you can use any of the two. However, if you are building solutions in .NET and using Visual Studio then Azure will be preferred as there is built-in tooling in Visual Studio for Azure.